公开(公告)号：US12088121B2

公开(公告)日：2024-09-10

申请号：US17777834

申请日：2020-11-20

Applicant: LG Electronics Inc.

Inventor： Yongcheol Park

IPC: H02J50/80 ,  H02J50/12 ,  H02J50/60

CPC classification number: H02J50/80 ,  H02J50/12 ,  H02J50/60

Abstract: A wireless power receiving device according to an embodiment of the present specification is a wireless power receiving device that receives wireless power from a wireless power transmission device. The wireless power receiving device: receives wireless power from the wireless power transmission device at an operating frequency through magnetic coupling with the wireless power transmission device; communicates with the wireless power transmission device using at least one of in-band communication using the operating frequency and out-band communication using a frequency other than the operating frequency; transmits a swap inquiry message to the wireless power transmission device through one of the in-band communication and the out-band communication; and receives a response message to the swap inquiry message from the wireless power transmission device through the other of the in-band communication and the out-band communication, and determines whether to swap the wireless power transmission device.

公开(公告)号：US12081289B2

公开(公告)日：2024-09-03

申请号：US17616535

申请日：2020-01-30

Applicant: LG Electronics Inc.

Inventor： Jingu Choi ,  Jinkwon Lim ,  Minsoo Lee ,  Joonho Park ,  Jaehyu Kim ,  Yongcheol Park

IPC: H04B5/79 ,  H02J50/10 ,  H02J50/40 ,  H02J50/80

CPC classification number: H04B5/79 ,  H02J50/10 ,  H02J50/40 ,  H02J50/80

Abstract: The present invention relates to an access control method and device in a wireless power transmission system. A wireless power transmission device comprises: a power conversion circuit configured to have a plurality of primary coils and transmit wireless power to a wireless power reception device by using the primary coil which has formed magnetic coupling to the wireless power reception device at an operating frequency; and a communication/control circuit configured to perform in-band communication with the wireless power reception device by using the operating frequency and perform out-band communication with the wireless power reception device by using a frequency other than the operating frequency, wherein the communication/control circuit can transmit information for notifying whether or not connection to the wireless power reception device is possible by using the out-band communication.

公开(公告)号：US12074448B2

公开(公告)日：2024-08-27

申请号：US18304677

申请日：2023-04-21

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park ,  Gyunghwan Yook

IPC: H02J50/10 ,  H02J50/12 ,  H02J50/40 ,  H02J50/80 ,  H02J7/00 ,  H02J50/00

CPC classification number: H02J50/10 ,  H02J50/12 ,  H02J50/80 ,  H02J7/00032 ,  H02J50/005 ,  H02J50/40

Abstract: A wireless power transmission apparatus including a controller configured to initiate a digital ping to solicit a response from a wireless power reception apparatus, perform a negotiation for a first available power indicator with the wireless power reception apparatus; and a power converter configured to transmit a wireless power to the wireless power reception apparatus according to the first available power indicator, wherein the controller is configured to transmit, to the wireless power reception apparatus in response to a received power packet, a bit pattern response requesting a communication by the wireless power transmission apparatus to change the first available power indicator, and transmit a packet related to a second available power indicator to the wireless power reception apparatus, and wherein the bit pattern response is defined as a pattern different from a bit pattern for an 8-bit ACK response, a bit pattern for an 8-bit NAK response and a bit pattern for an 8-bit ND response.

公开(公告)号：US11817917B2

公开(公告)日：2023-11-14

申请号：US17397323

申请日：2021-08-09

Applicant: LG Electronics Inc.

Inventor： Yongcheol Park

IPC: H04B5/00 ,  H02J50/80 ,  H02J50/60 ,  H02J7/02 ,  H02J5/00 ,  H02J50/10 ,  H02J50/12 ,  H02J7/00

CPC classification number: H04B5/0037 ,  H02J5/00 ,  H02J7/02 ,  H02J50/10 ,  H02J50/60 ,  H02J50/80 ,  H04B5/0031 ,  H02J7/00034 ,  H02J50/12

Abstract: According to an embodiment of the present invention, a method for transferring wireless power by an electric power transmitter may comprise: a selection step of monitoring a placement or a removal of an object on or from an interface surface of the power transmitter; a ping step of performing a digital ping and receiving a response from a power receiver; an identifying/configuring step of receiving a configuration packet including configuration information of the power receiver; and a negotiating step of transmitting a capability packet including information on a level of power transferred by the power transmitter, wherein the capability packet may include an NFC detection field indicating whether the power transmitter has a capability of detecting an RFID and/or an NFC, and/or whether the RDID and/or the NFC is detected.

公开(公告)号：US11736146B2

公开(公告)日：2023-08-22

申请号：US17346724

申请日：2021-06-14

Applicant: LG Electronics Inc.

Inventor： Yongcheol Park ,  Gyunghwan Yook ,  Seonghun Lee

IPC: H04B5/00 ,  H02J50/12 ,  H04W36/30 ,  H02J50/40

CPC classification number: H04B5/0037 ,  H02J50/12 ,  H04W36/30 ,  H02J50/40

Abstract: An apparatus and a method for performing handover between heterogeneous communication methods. A wireless power transmission apparatus and reception apparatus can indicate whether to support out-band communication thereof on the basis of an out-band flag. The wireless power transmission apparatus can request the wireless power reception apparatus to start a handover by using a bit pattern requesting the handover. The handover procedure to out-band may be performed in a negotiation phase or may be performed in a separate handover phase. Information for establishing an out-band communication connection can be transmitted from the wireless power reception apparatus to the wireless power transmission apparatus through in-band communication. Also, even after the handover to the out-band is completed, it is possible to periodically or intermittently perform the in-band communication in a power transmission phase to detect a swap of the wireless power reception apparatus.

公开(公告)号：US20230261523A1

公开(公告)日：2023-08-17

申请号：US18015823

申请日：2021-07-13

Applicant: LG ELECTRONICS INC.

Inventor： Jinho Youn ,  Minsoo Lee ,  Gyunghwan Yook ,  Jingu Choi ,  Yongcheol Park

IPC: H02J50/12 ,  H02J50/80 ,  H02J50/60

CPC classification number: H02J50/12 ,  H02J50/80 ,  H02J50/60 ,  H02J50/20

Abstract: A wireless power receiver, according to one embodiment of the present specification, communicates with a wireless power transmitter by using at least one of in-band communication and out-band communication, transmits, to the wireless power transmitter, on the basis that the wireless power transmitter indicates supporting the out-band communication, a first address packet comprising information related to a connection address of the wireless power receiver, for connection of the out-band communication, and receives, from the wireless power transmitter, a second address packet comprising information related to a connection address of the wireless power transmitter, for connection of the out-band communication.

公开(公告)号：US11658520B2

公开(公告)日：2023-05-23

申请号：US17222516

申请日：2021-04-05

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park

IPC: H02J50/80 ,  H02J50/12 ,  H02J50/40

CPC classification number: H02J50/80 ,  H02J50/12 ,  H02J50/40

Abstract: A wireless power transmitter, a wireless power receiver and methods associated therewith are discussed. The wireless power transmitter includes a power converter configured to transfer wireless power to an external receiver; and at least one processor configured to communicate with the receiver to control transmission of the wireless power and to perform transmission or reception of data, wherein the processor is configured to receive, from the receiver, a received power packet (RPP) which informs a value of received power; transmit, to the wireless power receiver, a bit pattern for requesting communication in response to the RPP; and receive a polling packet from the receiver in response to the bit pattern.

公开(公告)号：US11658513B2

公开(公告)日：2023-05-23

申请号：US17539895

申请日：2021-12-01

Applicant: LG ELECTRONICS INC.

Inventor： Yongcheol Park

IPC: H02J50/10 ,  H02J50/80 ,  H02J50/60 ,  H04B5/00 ,  H04L9/40 ,  H02J50/12

CPC classification number: H02J50/10 ,  H02J50/12 ,  H02J50/60 ,  H02J50/80 ,  H04B5/0037 ,  H04L9/40

Abstract: A method for receiving, by a power receiver, wireless power from a power transmitter. The method includes a ping phase of detecting execution of digital ping of the power transmitter and transmitting a response to the detected digital ping to the power transmitter using a first communication protocol; and a configuration phase of transmitting a configuration packet to the power transmitter using the first communication protocol, wherein the configuration packet includes communication protocol information of the power receiver indicating a second communication protocol supported by the power receiver. Further, the power receiver supports the second communication protocol, based on that a value of the communication protocol information is ‘1’, and the power receiver does not support the second communication protocol, based on that the value of the communication protocol information is ‘0’.

公开(公告)号：US11569692B2

公开(公告)日：2023-01-31

申请号：US17684905

申请日：2022-03-02

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghwan Kim ,  Yongcheol Park ,  Jihyun Lee ,  Gyunghwan Yook

IPC: H02J50/60 ,  H02J50/80 ,  H04B5/00 ,  H02J50/12 ,  H02J50/40 ,  H02J7/00

Abstract: Provided are an apparatus and method for performing foreign object detection in a wireless power transfer system. The present specification discloses a method comprising receiving a digital ping from the wireless power transmitter; transmitting an identification and configuration packets to the wireless power transmitter; transmitting a foreign object detection (FOD) state packet which indicates a reference Q factor of the wireless power receiver to the wireless power transmitter; and receiving wireless power through magnetic coupling from the wireless power transmitter based on the foreign object detection result of the wireless power transmitter using the reference Q factor. Irrespective of individual characteristics of a wireless power receiver, accuracy and reliability of detecting a foreign object may be improved.

公开(公告)号：US11552504B2

公开(公告)日：2023-01-10

申请号：US17514600

申请日：2021-10-29

Applicant: LG Electronics Inc.

Inventor： Yongcheol Park

IPC: H02J50/12 ,  H02J50/80 ,  H02J50/60 ,  H02J7/02 ,  H02J50/40 ,  H04B5/00

Abstract: A wireless power receiver comprises: a power pickup circuit for receiving wireless power from a wireless power transmitter on the basis of a magnetic coupling with the wireless power transmitter, and converting an alternating current signal generated by the wireless power into a direct current signal; and a communication/control circuit for communicating with the wireless power transmitter and controlling the wireless power that is received, wherein the communication/control circuit transmits, to the wireless power transmitter, an end power transfer packet for detecting a foreign object in a primary power transfer step of receiving the wireless power so as to enable the wireless power transmitter to detect the foreign object, receives a ping signal from the wireless power transmitter which has estimated that no foreign object is present, and transmits a data packet, in response to the ping signal, for entering a secondary power transfer step.